The development of #NuclearEnergy moves in exact sync in Germany and Finland but in opposite direction.

On 24.April 2002 the German government decided nuclear phaseout. #Atomkonsens

Just one month later, on 25.May 2002 the Finnish parliament approved construction of the world's largest nuclear reactor in Olkiluoto.

Ironic that, after delays, both processes come to conclusion on this very same weekend.

3 remaining reactors in Germany are closed and #Olkiluoto3 is commissioned.

The development of #NuclearEnergy moves in identical pace in Germany and Finland but in opposite direction.

On 24.April 2002 the German government decided nuclear phaseout. #Atomkonsens

Just one month later, on 25.May 2002 the Finnish parliament approved construction of the world's largest nuclear reactor in Olkiluoto.

Ironic that, after delays, both processes come to conclusion on this very same weekend.

3 remaining reactors in Germany are closed and #Olkiluoto3 is commissioned.

@tommi @piraatti @niksii Eikö tänne ole tullut ukrainalaisia pakolaisina? Voisiko joku tsekata, onko näiden joukossa ydinvoimalainssejä, ja palkata näitä apuun? #olkiluoto #Olkiluoto3

The #Olkiluoto3 nuclear power plant in Finland delayed again. Due to valve failure, commissioning should resume on 20th Feb. instead of 14th Feb as previously announced.

https://www.hs.fi/talous/art-2000009387667.html

The #Olkiluoto3 nuclear power plant delayed again. Due to valve failure, commissioning should resume on 20th Feb. instead of 14th Feb as previously announced.

https://www.hs.fi/talous/art-2000009387667.html

It deems #vibration is recurring problem in #nuclear new build. In #Olkiluoto3 it was the pressurizer surge line, and now also #Vogtle3 discovers vibration in cooling system piping. Earlier, EPR in Taishan reported damage in fuel stacks due to vibration.

With modern CFD tools one would think it should not be difficult to identify and mitigate such issues in design phase.

https://www.utilitydive.com/news/vogtle-nuclear-vibrations-cooling-georgia-power-southern-company/640391/
https://www.powermag.com/long-delayed-epr-nuclear-plants-face-further-holdups/
https://thediplomat.com/2021/12/safety-concerns-mount-over-damaged-fuel-rods-at-chinas-taishan-nuclear-plant/

With two of the four feedwater impellers still damaged, #Olkiluoto3 will resume commissioning tests after xmas. Two pumps are fixed with spare impellers, one runs with cracked impeller and one is in reserve.
Appears desperate to deliver at least a fraction of planned power output for this heating season.

Last May testing was interrupted due to foreign objects in turbine. With such track record, running a nuclear plant with cracked impellers sounds a bit adventurous.

https://www.tvo.fi/en/index/production/plantunits/ol3/ol3forecast.html

Finnish newspaper @hsfi reports on #Wartsila study that suggests that #WindPower coupled with #Hydrogen and Wärtsilä engines can deliver firm electricity supply of equal capacity but cheaper than the 1600MW #nuclear plant #Olkiluoto3.
However, many commentators are not delighted by this good news but seem outraged, claiming the study must be unreliable.
https://www.hs.fi/talous/art-2000009263064.html

Finnish newspaper @hsfi reports on #Wartsila study that suggests that #WindPower coupled with #Hydrogen and Wärtsilä engines can deliver firm electricity supply of equal capacity but cheaper than the 1600MW #nuclear plant #Olkiluoto3.
However, many commentators are not delighted by this good news but seem outraged, claiming the study must be unreliable.

With all 4 feedwater pumps damaged, and still no info on the cause, unsurprising announcement that there will be no more electricity from the #Olkiluoto3 #nuclear plant before christmas at earliest, and commercial operation pushed back to at least end of February.

Replacing the pumps is the easy part, but fixing the root cause could take a long time.
https://www.tvo.fi/en/index/news/pressreleasesstockexchangereleases/2022/olkiluoto3epr8217selectricityproductionwillcontinueattheendofdecemberattheearliest.html

The #Olkiluoto3 #nuclear power plant was supposed to resume commissioning this month and start commercial operation later this year but then cracks were observed in feedwater pumps.
Now the operator TVO announces commissioning can't resume before 11. Dec and commercial operation not before end of January 2023.
Still no indication what caused damage to all 4 pumps so I wouldn't be surprised if further delays are announced soon.
https://www.tvo.fi/en/index/news/pressreleasesstockexchangereleases/2022/theinvestigationintoolkiluoto3epr8217sfeedwaterpumpswillbecompletedindecember.html

The #Olkiluoto3 #nuclear power plant was supposed to resume commissioning this month and start commercial operation later this year but then cracks were observed in feedwater pumps.
Now the operator TVO announces commissioning can't resume before 11. Dec and commercial operation not before end of January.
Still no indication what caused damage to all 4 pumps. More delays likely.
https://www.tvo.fi/ajankohtaista/tiedotteetporssitiedotteet/2022/5up9o0zim.html

Nuclear plants can't run without all feedwater pumps in order. Seeing this impeller raises doubts whether #Olkiluoto3 will produce any electricity this year.

Reminds me of a joke.
Lawyer: Doctor, are you sure the patient was dead?
Doctor: Yes.
L: Did you check his pulse?
D: No
L: Did you check his breathing?
D: No
L: How can you be sure he was dead?
D: His brain was in a jar on my desk.
_______
(L:So can you say 100% sure he was dead?
D: Well I guess he could be practising law somewhere)

The #Olkiluoto3 nuclear plant is still awaiting revised schedule to continue commissioning. Cracks in feedwater pumps were discovered a few weeks ago.

In addition to fixing the pumps, important to find the cause for damage.

https://yle.fi/uutiset/74-20003783